I want to create an animation that will resize an UIView and its contents by a factor. Basically, I want to make an animation that first expands the view then shrinks it back to the original size.
What is the best way to do this? I tried CALayer.contentScale but it didn't do anything at all.
You can nest some animation blocks together like so:
Objective-C:
[UIView animateWithDuration:1
animations:^{
yourView.transform = CGAffineTransformMakeScale(1.5, 1.5);
}
completion:^(BOOL finished) {
[UIView animateWithDuration:1
animations:^{
yourView.transform = CGAffineTransformIdentity;
}];
}];
Swift 2:
UIView.animateWithDuration(1, animations: { () -> Void in
yourView.transform = CGAffineTransformMakeScale(1.5, 1.5)
}) { (finished: Bool) -> Void in
UIView.animateWithDuration(1, animations: { () -> Void in
yourView.transform = CGAffineTransformIdentity
})}
Swift 3/4/5:
UIView.animate(withDuration: 1, animations: {
yourView.transform = CGAffineTransform(scaleX: 1.5, y: 1.5)
}) { (finished) in
UIView.animate(withDuration: 1, animations: {
yourView.transform = CGAffineTransform.identity
})
}
and replacing the scale values and durations with your own.